Scenario 13-4 As Part of an Estate Settlement Mary Received $1 Million.She

Scenario 13-4
As part of an estate settlement Mary received $1 million.She decided to use the money to purchase a small business in Anywhere,USA.Her business operates in a perfectly competitive industry.If Mary would have invested the $1 million in a risk-free bond fund she could have earned $100,000 each year.She also quit her job with Lucky.Com Inc.to devote all of her time to her new business.Her salary at Lucky.Com Inc.was $75,000 per year.
-Refer to Scenario 13-4.What are Mary's opportunity costs of operating her new business?

A) $25,000
B) $75,000
C) $100,000
D) $175,000